CN218866373U

CN218866373U - Skin part treatment equipment

Info

Publication number: CN218866373U
Application number: CN202222410570.0U
Authority: CN
Inventors: 林富将; 刘联杰; 林小明
Original assignee: Shenzhen Youlai Intelligent Electronic Co ltd
Current assignee: Shenzhen Youlai Intelligent Electronic Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-04-14
Anticipated expiration: 2032-09-09

Abstract

The application discloses skin site treatment facility, this skin site treatment facility includes: a skin contacting element; a semiconductor cooling member having one side thermally coupled to the skin contact element; the first driving circuit is provided with a control end, a first output end and a second output end which are electrically connected with the semiconductor refrigerating piece; the control circuit is electrically connected with the control end and sends a first control signal and a second control signal to control the first driving circuit through the control end at different times, the first control signal is used for enabling the first output end to output positive voltage and the second output end to output negative voltage so as to enable the semiconductor refrigerating piece to refrigerate at one side thermally coupled with the skin contact element, and the second control signal is used for enabling the first output end to output negative voltage and the second output end to output positive voltage so as to enable one side thermally coupled with the skin contact element to refrigerate at one side thermally coupled with the semiconductor refrigerating piece. By means of the mode, the semiconductor refrigerating piece can be cooled/heated by changing the voltage polarities on the two sides of the semiconductor refrigerating piece.

Description

Skin part treatment equipment

Technical Field

The present application relates to the field of electronic devices, and more particularly, to a skin treatment device.

Background

With the development of science and technology and society, more and more people choose to use depilatory devices, beauty instruments, or the like for skin treatment. For example, the depilatory device emits pulsed light, so that the light wave energy of the pulsed light directly penetrates through the skin to irradiate on hair follicles, so that the hair follicles are heated and shrunk, the growth rate of the hairs is reduced, and the complete depilatory effect can be achieved after multiple use.

However, when the hair removal device is flashed, some of the light is absorbed by the skin tissue, which causes a hot pain to the skin. The higher the gear selected by the depilating device is, the higher the emitted light energy is, the more the corresponding skin absorbs, the stronger the thermal pain feeling is, and therefore, the depilating device needs to have a cooling effect. However, the applicant has found in long-term research and development that when the depilating device is just started to operate or low-gear depilating is used, the temperature of the skin-polishing contact part of the depilating device can be low, and the contact surface of the depilating device and the skin can feel cool.

Disclosure of Invention

In view of the above problems, the present application provides a skin part treatment device, which can realize the switching effect of the cooling/heating functions of the depilating device and the skin contact part in different use scenes, so that the depilating device and the skin contact surface reach a proper temperature.

In order to achieve the above object, the present application adopts a technical solution that: a skin site treatment device comprising: the skin contact device comprises a skin contact element, a semiconductor refrigerating piece and a first driving circuit, wherein one side of the semiconductor refrigerating piece is thermally coupled with the skin contact element; the first driving circuit is provided with a control end, a first output end and a second output end which are electrically connected with the semiconductor refrigerating piece.

The control circuit is electrically connected with the control end and sends a first control signal and a second control signal to control the first driving circuit through the control end at different times, the first control signal is used for enabling the first output end to output positive voltage and the second output end to output negative voltage so as to enable the semiconductor refrigerating piece to refrigerate on one side thermally coupled with the skin contact element, and the second control signal is used for enabling the first output end to output negative voltage and the second output end to output positive voltage so as to enable the semiconductor refrigerating piece to heat on one side thermally coupled with the skin contact element.

In an embodiment of the present application, the first temperature sensor is electrically connected to the control circuit, and is configured to detect an ambient temperature, and generate the second control signal when the ambient temperature is less than or equal to a first threshold.

In another embodiment of the present application, a second temperature sensor is electrically connected to the control circuit for detecting the temperature of the skin contact element or the temperature of the skin.

Wherein the control circuit is configured to generate the first control signal when the temperature of the skin contact element is greater than a second threshold, or when the temperature of the skin is greater than a third threshold, and to generate the second control signal when the temperature of the skin contact element is equal to or less than a fourth threshold, or when the temperature of the skin is less than a fifth threshold, the second threshold and the third threshold being greater than the first threshold, the fourth threshold, and the fifth threshold.

In another embodiment of the present application, a voltage/current sensor is electrically connected to the control circuit for detecting an operating voltage/current of the first driving circuit.

The control circuit is used for generating the first control signal when the working voltage is larger than a sixth threshold value or when the current is larger than a seventh threshold value.

In another embodiment of the present application, comprises: the skin treatment device comprises a skin treatment element, a second driving circuit, a voltage/current sensor and a second driving circuit, wherein the second driving circuit is electrically connected with the skin treatment element and the control circuit and is used for driving the skin treatment element to treat skin under the control of the control circuit; and the voltage/current sensor is electrically connected with the control circuit and is used for detecting the working voltage/current of the second driving circuit.

The control circuit is used for calculating the working power of the second driving circuit at the working voltage/current, and generating the second control signal when the working power is smaller than an eighth threshold and the environment temperature is smaller than a ninth threshold.

In another embodiment of the present application, the control circuit is configured to generate the first control signal when the ambient temperature is greater than a tenth threshold, the tenth threshold being greater than the first threshold.

In another embodiment of the present application, a second temperature sensor is disposed adjacent to the skin contact element and electrically connected to the control circuit for detecting a temperature of the skin contact element or a temperature of the skin.

Wherein the control circuit is configured to generate the second control signal when the temperature of the skin contact element is less than a fourth threshold or when the temperature of the skin is less than a fifth threshold; the control circuit is configured to generate the first control signal when the temperature of the skin contact element is greater than a second threshold, or when the temperature of the skin is greater than a third threshold.

In another embodiment of the present application, the first driving circuit includes: the switch comprises a first switch tube, a second switch tube, a third switch tube and a fourth switch tube.

The input end of the first switch tube and the output end of the second switch tube are used as the first output end to be electrically connected with the first side of the semiconductor refrigerating piece, the input end of the third switch tube and the output end of the fourth switch tube are used as the second output end to be connected with the second side of the semiconductor refrigerating piece, the output end of the first switch tube and the output end of the third switch tube are electrically connected with a first voltage source, and the input end of the second switch tube and the input end of the fourth switch tube are electrically connected with a second voltage source.

The control ends of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are correspondingly connected with four terminals of the control circuit one by one.

The control ends of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are respectively connected with the corresponding terminals of the control circuit through a current-limiting resistor, the current-limiting resistor is connected with a diode in parallel, the cathode end of the diode is connected with the corresponding terminal of the control circuit, and the anode end of the diode is connected with the corresponding control end and the ground.

Further, the first control signal includes a first voltage signal provided to the control terminal of the first switch tube and the control terminal of the fourth switch tube, and the first voltage signal is higher than signals received by the control terminals of the second switch tube and the third switch tube, so that the first switch tube and the fourth switch tube are opened, and the second switch tube and the third switch tube are kept closed.

The second control signal comprises a second voltage signal which is provided for the control end of the second switch tube and the control end of the third switch tube, and the second voltage signal is higher than signals received by the control end of the first switch tube and the control end of the fourth switch tube, so that the first switch tube and the fourth switch tube are kept closed, and the second switch tube and the third switch tube are opened.

The control circuit is specifically configured to switch from sending the first control signal to sending the second control signal, or from sending the second control signal to sending the first control signal, and in the middle of the switching, the control circuit controls the first switching tube, the second switching tube, the third switching tube, and the fourth switching tube to be turned off simultaneously.

The beneficial effect of this application has: the sensor detects data such as ambient temperature, skin temperature, and voltage/current of the working circuit, so that the control circuit outputs control signals, i.e., the first control signal and the second control signal. The first control signal is used for enabling the first output end to output positive voltage and the second output end to output negative voltage, so that the semiconductor refrigerating piece refrigerates on one side thermally coupled with the skin contact element, and the second control signal is used for enabling the first output end to output negative voltage and the second output end to output positive voltage, so that the semiconductor refrigerating piece heats on one side thermally coupled with the skin contact element, and therefore the effect of switching the refrigerating/heating functions of the depilating device and the skin contact part is achieved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic view of an embodiment of a skin site treatment device of the present application;

FIG. 2 is a schematic circuit diagram of the control circuit of FIG. 1 and a temperature sensor connected thereto;

FIG. 3 is a circuit schematic of the first driver circuit shown in FIG. 1;

FIG. 4 is a schematic diagram of the switching of the first control signal and the second control signal outputted by the control circuit shown in FIG. 1;

FIG. 5 is a schematic view of another embodiment of a skin site treatment device of the present application;

FIG. 6 is a schematic electrical circuit diagram of a first power circuit in an embodiment of the skin site treatment device of the present application;

fig. 7 is a schematic circuit diagram of a second power circuit in an embodiment of the skin site treatment device of the present application.

Detailed Description

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. Further, the term "plurality" herein means two or more than two. In addition, the term "at least one" herein means any one of a variety or any combination of at least two of a variety, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C. In addition, the terms "first," "second," and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated.

In order to make those skilled in the art better understand the technical solutions of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a skin site treatment device according to the present application. The application provides a skin site treatment device, skin site treatment device includes: the skin contact element 100, the semiconductor refrigeration piece 200 and the first driving circuit 300, wherein one side of the semiconductor refrigeration piece 200 is thermally coupled with the skin contact element 100; the first driving circuit 300 has a control terminal 310 and first and

second output terminals

320 and 330 electrically connected to the semiconductor cooling device 200.

The control circuit 400 is electrically connected to the control terminal 310, and sends a first control signal and a second control signal to control the first driving circuit 300 through the control terminal 310 at different times, the first control signal is used to enable the first output terminal 320 to output a positive voltage and the second output terminal 330 to output a negative voltage, so that the semiconductor cooling member 200 cools the side thermally coupled to the skin contact element 100, the second control signal is used to enable the first output terminal 320 to output a negative voltage and the second output terminal 330 to output a positive voltage, so that the side thermally coupled to the skin contact element 100 of the semiconductor cooling member 200 heats.

One side of the semiconductor chilling element 200 is thermally coupled to the skin contact element 100. When the semiconductor refrigerating piece 200 heats, the skin contact element 100 is heated, and after the skin contact element 100 contacts the skin, the skin feels comfortable and is not cold; when the semiconductor chilling element 200 is chilled, the skin contact element 100 is cooled down to lower the skin surface temperature when the skin is overheated.

The switching of the cooling/heating modes of the semiconductor cooling device 200 is performed by changing the voltage polarities of the first output terminal 320 and the second output terminal 330 for supplying power to the semiconductor cooling device 200. When the semiconductor cooling device 200 is scheduled to output a positive voltage at the first output end 320 and a negative voltage at the second output end 330, the semiconductor cooling device 200 is coupled to the skin contact element 100 for cooling. In contrast, when the first output terminal 320 is switched to output negative pressure and the second output terminal 330 is switched to output positive pressure, the semiconductor cooling device 200 coupled to the skin contact element 100 will generate heat.

The semiconductor cooling device 200 is coupled to the skin contact device 100 for switching the cooling/heating modes at one side thereof, and is determined by a control signal sent by the control circuit 400.

Alternatively, the temperature may be used to trigger the control circuit 400 to issue the first control signal or the second control signal. For example, the control circuit 400 is configured to receive a temperature detection signal generated by a temperature sensor. The type of temperature detection signal is various, such as ambient temperature, skin temperature. After the control circuit 400 receives the temperature detection signal, the appropriate temperature that the skin contact element 100 is expected to reach at the present time is calculated by a correlation algorithm.

Alternatively, a key provided in the skin site treatment device may be used to trigger the control circuit 400 to issue the first control signal or the second control signal. For example, the site processing apparatus is provided with a switching key to switch the cooling/heating mode. The control circuit 400 sends out a first control signal or a second control signal after receiving a switching signal generated by pressing a switching key. Optionally, the first control signal is used to enable the first output end 320 to output a positive voltage and the second output end 330 to output a negative voltage, so as to enable the semiconductor refrigeration piece 200 to refrigerate the side thermally coupled with the skin contact element 100; the second control signal is used to make the first output terminal 320 output a negative voltage and the second output terminal 330 output a positive voltage, so that the semiconductor cooling member 200 heats the side thermally coupled with the skin contact element 100.

Referring to fig. 2, fig. 2 is a circuit diagram of the control circuit shown in fig. 1 and a temperature sensor connected to the control circuit. In the circuit diagram, two temperature sensors are arranged on the right side of the diagram, a pin GND is grounded, DQ is a digital signal input/output end, and VDD is an external power supply input end and is responsible for supplying power to the temperature sensors. The U3 is a control module chip, and a pin 7 of the U3 chip is grounded; pin 9 is connected to VDD and is responsible for supplying power to control circuit 400; the pin 17 and the pin 18 are connected to the first switch 321 and the fourth switch tube 332 in the first driving circuit 300, and are responsible for transmitting the first control signal; the

pins

15 and 16 are connected to the second switch 322 and the third switch tube 331 of the refrigeration/heat exchange circuit, and are responsible for transmitting the second control signal. The first control signal and the second control signal are both PWM pulse signals.

Referring to fig. 3, fig. 3 is a circuit diagram of the first driving circuit shown in fig. 1. The first driving circuit 300 includes: a first switch tube 321, a second switch tube 322, a third switch tube 331, and a fourth switch tube 332. The input end of the first switch tube 321 and the output end of the second switch tube 322 are used as a first output end 320 and electrically connected to the first side of the semiconductor refrigeration piece 200, the input end of the third switch tube 331 and the output end of the fourth switch tube 332 are used as a second output end 330 and connected to the second side of the semiconductor refrigeration piece 200, the output ends of the first switch tube 321 and the third switch tube 331 are electrically connected to a first voltage source, and the input end of the second switch tube 322 and the input end of the fourth switch tube 332 are electrically connected to a second voltage source.

The first switch tube 321 is a triode Q1, the second switch tube 322 is a triode Q2, the third switch tube 331 is a triode Q3, the fourth switch tube 332 is a triode Q4, the input end of the first switch tube 321 and the output end of the second switch tube 322 are used as the first output end 320, the input end of the third switch tube 331 and the output end of the fourth switch tube 332 are used as the second output end 330, the first output end 320 and the second output end 330 are electrically connected with the semiconductor refrigerating part 200, and voltage conversion at two sides of the semiconductor refrigerating part 200 is controlled.

The control ends of the first switch tube 321, the second switch tube 322, the third switch tube 331 and the fourth switch tube 332 are connected to the four terminals of the control circuit 400 in a one-to-one correspondence manner.

The control end of the first switch tube 321 is connected to the pin 18 of the control circuit 400, the control end of the second switch tube 322 is connected to the pin 15 of the control circuit 400, the control end of the third switch tube 331 is connected to the pin 16 of the control circuit 400, and the control end of the fourth switch tube 332 is connected to the pin 17 of the control circuit 400.

Meanwhile, the respective control terminals of the first switch tube 321, the second switch tube 322, the third switch tube 331 and the fourth switch tube 332 are connected to the corresponding terminal of the control circuit 400 through a current-limiting resistor, and the current-limiting resistor is connected in parallel with a diode 340, the diode 340 controls the current flowing direction to protect the triode, the cathode terminal of the diode 340 is connected to the corresponding terminal of the control circuit 400, and the anode terminal of the diode 340 is connected to the corresponding control terminal and ground.

In the cooling mode, the control circuit 400 sends a first control signal to the control terminal 310, where the first control signal includes a first voltage signal provided to the control terminal of the first switching tube 321 and the control terminal of the fourth switching tube 332, and the first voltage signal is higher than signals received by the control terminal of the second switching tube 322 and the control terminal of the third switching tube 331, so that the first switching tube 321 and the fourth switching tube 332 are turned on, and the second switching tube 322 and the third switching tube 331 are kept turned off.

Specifically, the pin 18 sends a PWM pulse signal PWM N + to the control terminal of the first switching tube 321, and the pin 17 sends a PWM pulse signal PWM N-to the control terminal of the fourth switching tube 332, so that the first switching tube 321 and the fourth switching tube 332 are opened, but at this time, the second switching tube 322 and the third switching tube 331 are closed because the PWM pulse signal is not received by the second switching tube 322 and the third switching tube 331, so that the current flows to the semiconductor refrigeration device 200 through the first switching tube 321, and then flows to the fourth switching tube 332 through the semiconductor refrigeration device 200, so that the first output end 320 outputs a positive voltage, and the second output end 330 outputs a negative voltage, so that the semiconductor refrigeration device 200 refrigerates on the side thermally coupled with the skin contact element 100, and generates a refrigeration effect.

In the heating mode, the control circuit 400 sends a second control signal to the control terminal 310, where the second control signal includes a second voltage signal provided to the control terminal of the second switching tube 322 and the control terminal of the third switching tube 331, and the second voltage signal is higher than signals received by the control terminal of the first switching tube 321 and the control terminal of the fourth switching tube 332, so that the first switching tube 321 and the fourth switching tube 332 are kept closed, and the second switching tube 322 and the third switching tube 331 are opened.

Specifically, the pin 16 transmits a PWM pulse signal PWM P + to the control terminal of the second switching tube 322, and the pin 15 transmits a PWM pulse signal PWM P-to the control terminal of the third switching tube 331, so that the second switching tube 322 and the third switching tube 331 are turned on, but at this time, the first switching tube 321 and the fourth switching tube 332 are turned off because the first switching tube 321 and the fourth switching tube 332 do not receive the PWM pulse signal, so that the current flows to the semiconductor cooling device 200 through the second switching tube 322, and then flows to the third switching tube 331 through the semiconductor cooling device 200, the first output terminal 320 outputs a negative voltage, and the second output terminal 330 outputs a positive voltage, so that the semiconductor cooling device 200 heats the side thermally coupled with the skin contact element 100, and generates a heating effect.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a switching principle of the first control signal and the second control signal output by the control circuit shown in fig. 1. The control circuit 400 is specifically configured to switch from sending the first control signal to sending the second control signal, or from sending the second control signal to sending the first control signal, and in the middle of the switching, the control circuit 400 controls the first switching tube 321, the second switching tube 322, the third switching tube 331, and the fourth switching tube 332 to be turned off simultaneously.

In the switching diagram, the X axis represents time, the Y axis represents voltage, the upper arm driver BH represents the first switching tube 321 and the fourth switching tube 332, and the lower arm driver BL represents the second switching tube 322 and the third switching tube 331.

During the time periods t1 and t5, the first control signal is acted, the first switch tube 321 and the fourth switch tube 332 are opened, the second switch tube 322 and the third switch tube 331 are closed, so that the first output end 320 outputs a positive voltage, the second output end 330 outputs a negative voltage, and the side of the semiconductor refrigerating member 200 thermally coupled with the skin contact element 100 is refrigerated; in the time periods t3 and t7, the second control signal is acted, the second switching tube 322 and the third switching tube 331 are opened, the first switching tube 321 and the fourth switching tube 332 are closed, so that the first output end 320 outputs a negative voltage, the second output end 330 outputs a positive voltage, and the side of the semiconductor refrigerating member 200 thermally coupled with the skin contact element 100 heats; t2, t4 and t8 are dead time, which is a protection period set for simultaneous conduction when PWM is output in order to prevent the upper and lower tubes of the circuit from being turned on simultaneously due to the turn-off delay of the switch, so that the tubes can be prevented from being burnt out by the simultaneous turn-on of the upper and lower tubes, and therefore, in the dead time, the first switch tube 321, the second switch tube 322, the third switch tube 331 and the fourth switch tube 332 are all turned off.

Referring to fig. 5, fig. 5 is a schematic structural view of another embodiment of the skin site treatment apparatus of the present application. The sensor is used for detecting the ambient temperature, the skin temperature, the voltage/current of the working circuit, etc., and sending the detected signal to the control circuit 400, and then the control circuit 400 sends the control signal to the control terminal 310.

In one embodiment of the present application, the skin site treatment device includes a first temperature sensor 500, the first temperature sensor 500 being electrically connected to the control circuit 400 for sensing the ambient temperature. The control circuit 400 generates the second control signal when the ambient temperature is less than or equal to the first threshold. The first control signal is generated when the ambient temperature is greater than a tenth threshold, the tenth threshold being greater than the first threshold.

When the ambient temperature is less than or equal to the set first threshold, indicating that the ambient temperature is too cold, the skin site treatment device may not be operated yet, i.e., it is about to operate to allow the skin contact element 100 to contact the skin, and the temperature of the skin contact element 100 is now too low, which may cause the skin to feel cold when contacting the skin; or the skin site treating device is operating, but the temperature of the skin contacting element 100 is not high enough for the skin to feel warm. In both cases, the control circuit 400 sends a second control signal so that the side of the semiconductor cooling member 200 thermally coupled to the skin contact element 100 heats; when the ambient temperature is greater than the tenth threshold, i.e. the skin site treatment device is operating such that the skin contact element 100 is overheated and may scald the skin, the first temperature sensor 500 transmits an ambient temperature signal to the control circuit 400, and the control circuit 400 sends a control signal, i.e. a first control signal, such that the side of the semiconductor cooling member 200 thermally coupled to the skin contact element 100 is cooled. Wherein the tenth threshold is greater than the first threshold.

Optionally, in another embodiment, the skin site treatment device comprises a second temperature sensor 600, the second temperature sensor 600 being electrically connected to the control circuit 400 for detecting the temperature of the skin contact element 100 or the temperature of the skin. The control circuit 400 is configured to generate a first control signal when the temperature of the skin contact element 100 is greater than a second threshold value, or when the temperature of the skin is greater than a third threshold value, and generate a second control signal when the temperature of the skin contact element 100 is less than or equal to a fourth threshold value, or when the temperature of the skin is less than a fifth threshold value, wherein the second threshold value and the third threshold value are greater than the first threshold value, the fourth threshold value, and the fifth threshold value.

When the temperature of the skin contact element 100 is greater than the set second threshold value, or when the temperature of the skin is greater than the set third threshold value, it indicates that the depilating device may be performing high-level light depilating, and during the high-level light depilating, the emitted light energy is high, which causes the temperature of the skin contact element 100 to be too high, and thus causes the surface temperature of the skin to be too high during the contact between the skin and the skin contact element 100. In this case, the control circuit 400 sends a control signal, i.e., a first control signal, so that the side of the semiconductor cooling member 200 thermally coupled to the skin contact element 100 cools; when the temperature of the skin contact element 100 is equal to or lower than the set fourth threshold value, or when the temperature of the skin is lower than the set fifth threshold value, i.e. when the epilation device may be performing low-level light epilation, the emitted light energy is low and the temperature of the skin contact element 100 is not high enough for the skin to feel warm. In this case the control circuit 400 sends a control signal, i.e. a second control signal, such that the side of the semiconductor cooling member 200 that is thermally coupled to the skin contact element 100 heats. Meanwhile, the second threshold and the third threshold are both larger than the first threshold, the fourth threshold and the fifth threshold.

Optionally, in another embodiment, the skin site treatment device includes a voltage/current sensor 900 electrically connected to the control circuit 400 for detecting the operating voltage/current of the first drive circuit 300. The control circuit 400 is configured to generate the first control signal when the operating voltage is greater than a sixth threshold or when the current is greater than a seventh threshold.

When the operating voltage of the control circuit 400 is greater than the set sixth threshold or when the current is greater than the set seventh threshold, it indicates that the depilating device may be in the high-level lighting operating state, so that the skin contact element 100 has a relatively high temperature at this time, and the skin will be touched to feel that the temperature is relatively high, so that the control circuit 400 sends a control signal, i.e., a first control signal, to cool the side of the semiconductor cooling member 200 thermally coupled to the skin contact element 100.

Optionally, in another embodiment, a skin site treatment device includes: skin treatment element 800, second drive circuit 700, voltage/current sensor 900; the second driving circuit 700 is electrically connected with the skin treatment element 800 and the control circuit 400, and is used for driving the skin treatment element 800 to treat the skin under the control of the control circuit 400; the voltage/current sensor 900 is connected to the control circuit 400 for detecting the operating voltage/current of the second driving circuit 700.

The skin treatment element 800 may be a lamp of an epilation device, or may be an electrode of a cosmetic instrument, and the control circuit 400 is configured to calculate an operating power of the second driving circuit 700 at an operating voltage/current, where the operating power is less than a set eighth threshold, which indicates that the second driving circuit 700 may be in a low-level operating state at this time; or the detected ambient temperature is lower than the set ninth threshold value at this time. In both cases, the power emitted by the lamp of the epilating apparatus or the electrodes of the beauty instrument is not sufficient to cause the skin to feel warm, so that the control circuit 400 sends a control signal, i.e. a second control signal, such that the side of the semiconductor cooling member 200 that is thermally coupled to the skin contact element 100 heats up.

Optionally, in another embodiment of the present application, the second temperature sensor 600 in the skin treatment element 800 performs temperature detection alone, and the second temperature sensor 600 is disposed adjacent to the skin contact element 100 and is electrically connected to the control circuit 400 for detecting the temperature of the skin contact element 100 or the temperature of the skin. Wherein the control circuit 400 is configured to generate the second control signal when the temperature of the skin contact element 100 is less than the fourth threshold value, or when the temperature of the skin is less than the fifth threshold value; the control circuit 400 is adapted to generate the first control signal when the temperature of the skin contact element 100 is larger than a second threshold value, or when the temperature of the skin is larger than a third threshold value.

Specifically, when the temperature of the skin contact element 100 is less than the set fourth threshold, since the temperature of the skin contact element 100 is approximately equal to the ambient temperature, it is determined that the ambient temperature is relatively low at this time; on the other hand, when the skin temperature is lower than the set fifth threshold, it is also assumed that the ambient temperature is relatively low at this time. In both cases, the temperature of the skin contact element 100 is not enough to warm the skin, and the control circuit 400 sends a control signal, i.e. a second control signal, to heat the side of the semiconductor cooling member 200 thermally coupled to the skin contact element 100 to raise the temperature of the skin contact element 100, so as to warm the skin; when the temperature of the skin contact element 100 is greater than the set second threshold, it is determined that the temperature of the skin contact element 100 is relatively high at this time, since the temperature of the skin contact element 100 is about greater than the ambient temperature; on the other hand, when the skin temperature is higher than the set third threshold value, it is also presumed that the ambient temperature is relatively high at this time. In both cases, the skin contact element 100 is not sufficient to lower the skin surface temperature, and the control circuit 400 sends a control signal, i.e. a first control signal, to cool the side of the semiconductor cooling device 200 thermally coupled to the skin contact element 100 to lower the temperature of the skin contact element 100, thereby lowering the skin surface temperature.

Referring to fig. 6, fig. 6 is a circuit schematic diagram of a first power circuit in an embodiment of a skin site treatment device. The first power source is used to supply power to the first driving circuit 300 and the second power source.

Referring to fig. 7, fig. 7 is a circuit schematic diagram of a second power circuit in an embodiment of a skin site treatment device. The voltage of the second power source is derived from the first power source and the second power source provides power to the control circuit 400 and the temperature sensor.

The above description is only an embodiment of the present application, and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A skin site treatment apparatus, comprising:

a skin contacting element;

a semiconductor cooling member having one side thermally coupled to the skin contact element;

the first driving circuit is provided with a control end, a first output end and a second output end which are electrically connected with the semiconductor refrigerating piece;

and the control circuit is electrically connected with the control end and sends a first control signal and a second control signal to control the first driving circuit through the control end at different times, the first control signal is used for enabling the first output end to output positive voltage and the second output end to output negative voltage so as to enable the semiconductor refrigerating piece to refrigerate on one side thermally coupled with the skin contact element, and the second control signal is used for enabling the first output end to output negative voltage and the second output end to output positive voltage so as to enable the semiconductor refrigerating piece to heat on one side thermally coupled with the skin contact element.

2. The skin site treatment device of claim 1, comprising:

the first temperature sensor is electrically connected with the control circuit and used for detecting the ambient temperature;

wherein the second control signal is generated when the ambient temperature is less than or equal to a first threshold.

3. The skin site treatment device of claim 2, comprising:

a second temperature sensor electrically connected to the control circuit for detecting the temperature of the skin contact element or the temperature of the skin;

wherein the control circuit is configured to generate the first control signal when the temperature of the skin contact element is greater than a second threshold, or when the temperature of the skin is greater than a third threshold, and to generate the second control signal when the temperature of the skin contact element is less than or equal to a fourth threshold, or when the temperature of the skin is less than a fifth threshold, the second threshold and the third threshold being greater than the first threshold, the fourth threshold, and the fifth threshold.

4. The skin site treatment device of claim 2, comprising:

the voltage/current sensor is electrically connected with the control circuit and is used for detecting the working voltage/current of the first driving circuit;

5. The skin site treatment device of claim 2, comprising:

a skin treatment element;

a second drive circuit electrically connected to the skin treatment element and the control circuit for driving the skin treatment element under control of the control circuit to treat the skin;

the voltage/current sensor is electrically connected with the control circuit and is used for detecting the working voltage/current of the second driving circuit;

6. The skin site treatment device of claim 2, comprising:

the control circuit is configured to generate the first control signal when the ambient temperature is greater than a tenth threshold, where the tenth threshold is greater than the first threshold.

7. The skin site treatment device of claim 1, comprising:

a second temperature sensor disposed adjacent to the skin contact element and electrically connected to the control circuit for detecting a temperature of the skin contact element or a temperature of the skin;

8. The skin site treatment device of claim 1, wherein the first drive circuit comprises:

the first switch tube, the second switch tube, the third switch tube and the fourth switch tube;

the input end of the first switch tube and the output end of the second switch tube are used as the first output end and are electrically connected with the first side of the semiconductor refrigeration piece, the input end of the third switch tube and the output end of the fourth switch tube are used as the second output end and are electrically connected with the second side of the semiconductor refrigeration piece, the output ends of the first switch tube and the third switch tube are both electrically connected with a first voltage source, and the input end of the second switch tube and the input end of the fourth switch tube are both electrically connected with a second voltage source;

9. The skin site treatment device of claim 8,

the first control signal comprises a first voltage signal provided for the control end of the first switch tube and the control end of the fourth switch tube, and the first voltage signal is higher than signals received by the control end of the second switch tube and the control end of the third switch tube, so that the first switch tube and the fourth switch tube are opened, and the second switch tube and the third switch tube are kept closed;

10. The skin site treatment device of claim 9,

the control circuit is specifically configured to switch from sending the first control signal to sending the second control signal, or from sending the second control signal to sending the first control signal, and in the middle of the switching, the control circuit controls the first switching tube, the second switching tube, the third switching tube, and the fourth switching tube to be turned off at the same time.

11. The skin site treatment device of claim 8,